Questions

Monosaccharide which is responsible for the sweet taste of fruit?

Which of the following are physical signs of stress?

What is the unit of the physical quantity "Young's modulus"?

In the formula average velocity = (u + v) /2, u is the ___________.

Which of the following PSU had received 'Top Challengers' and 'Best Mining Equipment Seller Award', recently?

Name the British Viceroy who was the original practitioner of the policy of 'divide and rule' in Bengal.

In the following question, four words are given out of which one word is correctly spelt. Select the correctly spelt word.

Read the passage carefully and choose the best answer to each question out of the four alternatives and click the button corresponding to it.

Crude mineral oil comes out of the earth as a thick brown or black liquid with a strong smell. It is a complex mixture of many different substances, each with its own individual qualities. Most of them are combinations of hydrogen and carbon in varying proportions. Such hydrocarbons are also found in other forms such as bitumen, asphalt and natural gas. Mineral oil originates from the carcasses of tiny animals and from plants that live in the sea. Over million of years, these dead creatures form large deposits under sea­bed and ocean currents cover them with a blanket of sand and silt. As this material hardens, it becomes sedimentary rock and effectively shuts out the oxygen, thus preventing the complete decomposition of the marine deposits underneath. The layers of sedimentary rocks become thicker, and heavier. Their pressure produces heat, which transforms the tiny carcasses into crude oil in a process that is still going on today.

What is crude mineral oil?